Copernicus Land Services High Resolution Layers in the UK Geoff Smith
Sentinels Services In-situ data
Land Services: Pan-European Component CORINE Land Cover (CLC) – Land cover land use mapping – 25 ha (5 ha) MMU – 6 year update cycle – Member State produced Limitations – MMU too coarse – Changes happen quickly – Changes are smaller – Biophysical info needed
To address the limitations of the CLC a set of new products were developed: more spatially detailed. less thematically rich. High ‘spatial’ Resolution Layers (HRLs) Developed through R&D projects (e.g.Geoland2) Fast Track Service Precursors GMES Initial Operations are first full set Land Services: Pan-European Component
Specifications: Raster format. Intermediate products 20 m spatial resolution. Final products at 100 m spatial resolution. Continuous variables and masks. 3 year update cycle. Layers: Imperviousness. Forest (crown cover density & type). Permanent grassland. Wetland. Permanent water bodies. Land Services: HRLs
GMES Initial Operations: Target year of 2012, aligned with CLC. Two image coverages: SPOT / IRS, Vis / NIR / SWIR, 20 m. RapidEye, Vis / NIR, 20 m (6 m). HRL production: Service providers deliver intermediate product. MS verification (look & feel, quantitative). MS / SP enhancement. EEA semantic checking. Release 100 m product in October Land Services: HRLs
Imperviousness (IMD)
Imperviousness (verification)
Forest tree cover density (TCD) & type (FTY)
Forest cover density (verification)
Forest type (verification)
Permanent Grasslands (GRA)
Permanent Grasslands (Verification)
Wetlands (WET)
Wetlands (Verification)
Permanent Water Bodies (PWB)
Permanent Water (Verification)
Quantitative assessment Layer SP: Overall accuracy (%) UK: Overall accuracy (%) UK: User’s accuracy (%) UK: Producer’s accuracy (%) IMD TCD FTY *60.80* GRA WET PWB Note: * Average for coniferous and deciduous.
Shades of orange and brown are soil sealing. Uses: Imperviousness
False urban New urban Shades of orange and brown are soil sealing. Uses: Imperviousness
CLC coniferous forest (312) objects plus HRL Forest crown cover density. Subdivide 312 into different density classes. Identify sub-objects below CLC MMU. Uses: Forest (TCD)
Take home messages…. Copernicus Land Services: HRLs – Quality is variable between layers and to a lesser extent spatially. – Imperviousness, forest and water layer are viable. – Grassland is poor and has been re-specified by EEA and the service providers. – Wetland has some issues and may be redefined. – European focus, but applicable at MS and below. – Consider them as support layers. – Opportunities to refine and enhance layers if sufficient user feedback. – HRLs will be launched in October 2015.
QUESTIONS? Geoff Smith, Specto Natura, Ltd.